43 2 Stuck in Traffic? EXPLORING DATA WITH TABLES AND GRAPHS Does it seem like traffic is getting worse and that rush hour has expanded to include most of the day? If your commute to work or college seems like it is getting longer, that’s because it probably is! Recent data from the U.S. Census Bureau’s American Community Survey found that the average American’s commute time increased from 26.6 minutes to 26.9 minutes over a one-year period. That increase may seem small, but it means the average American spends 2.5 hours more in traffic per year! Even minor changes in daily commute times can have major impacts on productivity, the environment, mental health, and more. In this Chapter Problem we will consider daily commute times in different cities. It is important that commute times be analyzed at both the national and local levels so that undesirable trends can be identified and mitigated. Table 2-1 lists 50 reported daily commute times (to work) from residents of the CHAPTER PROBLEM 2-1 Frequency Distributions for Organizing and Summarizing Data 2-2 Histograms 2-3 Graphs That Enlighten and Graphs That Deceive 2-4 Scatterplots, Correlation, and Regression
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